#include<bits/stdc++.h>
using namespace std;

int main(){
    int n;
    cin>>n;
    if(n<3){
        cout<<"no";
    }else{
        int a=0,b=0,d;
        for(int i=0;i<n;i++){
            cin>>d;
            if(d%2==0){
                a++;
            }else{
                b++;
            }
        }

        if(b&&a>=2){  //奇数b至少有1个,同时偶数必须有2个
            cout<<"yes";
        }else if(b>=3){ //奇数b至少3个
            cout<<"yes";
        }else{
            cout<<"no";
        }
    }
    return 0;
}